Bug#22067 rpl_rbr_to_sbr and some other fail if NDB is default storage

A query SET @@GLOBAL.binlog_format = ... returns an error when NDB is the
default storage. This fails some tests invoking the set binlog_format explicitly.
because the var turns to be read-only.
  
  In the following are files and method to fix if needed.
  
  t/
  ndb_binlog_basic2.test         # here the failure is benign
  rpl_rbr_to_sbr.test            # does not check any ndb features =>           
 
  .                              # => not_ndb_default is enough
  rpl_row_basic_8partition.test  # set binlog_format can be replaced
  rpl_switch_stm_row_mixed.test  # does not check any ndb features =>
  .                              # => not_ndb_default is enough
  
  two more invoking invoke extra/rpl_truncate_helper.test
  
  rpl_truncate_2myisam           # to be fixed with not_ndb_default
  rpl_truncate_3innodb           # same as above
  .                              # because there is a dedicated to ndb .        
 
  .                              # rpl_truncate_7ndb* suit.

Adapting/testing a new implement
--source include/safe_set_to_maybe_ro_var.inc
to avoid abort due to the error using binlog_format as application.

.bzrignore

@@ -1791,3 +1791,4 @@ vio/viotest-sslconnect.cpp
 vio/viotest.cpp
 zlib/*.ds?
 zlib/*.vcproj
+mysql-test/t/rpl_truncate_4ndb.test

mysql-test/include/safe_set_to_maybe_ro_var.inc

+# to mask out the error - never abort neither log in result file - in setting 
+# to read-only variable.
+# It is assumed that the new value is equal to one the var was set to.
+# Such situation happens particularily with binlog_format that becomes read-only
+# with ndb default storage.
+#
+# when generate results always watch the file to find what is expected,
+# the SET query may fail
+
+# script accepts $maybe_ro_var the var name and $val4var the value
+
+### USAGE:
+### let $maybe_ro_var= ...
+### let $val4var= ...
+### include/safe_set_to_maybe_ro_var.inc
+
+--disable_result_log
+--disable_abort_on_error
+eval SET $maybe_ro_var = $val4var;
+--enable_abort_on_error
+--enable_result_log
+
+eval SELECT $maybe_ro_var;

mysql-test/r/rpl_row_basic_8partition.result

@@ -5,7 +5,10 @@ reset slave;
 drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
 start slave;
 DROP TABLE IF EXISTS t1;
-SET BINLOG_FORMAT=ROW;
+SET @@BINLOG_FORMAT = ROW;
+SELECT @@BINLOG_FORMAT;
+@@BINLOG_FORMAT
+ROW
 **** Partition RANGE testing ****
 CREATE TABLE t1 (id MEDIUMINT NOT NULL, b1 BIT(8), vc VARCHAR(255), 
 bc CHAR(255), d DECIMAL(10,4) DEFAULT 0, 

mysql-test/t/rpl_rbr_to_sbr.test

 -- source include/have_row_based.inc
 -- source include/have_binlog_format_mixed_or_statement.inc
+-- source include/not_ndb_default.inc
 -- source include/master-slave.inc
 
 # Test that the slave temporarily switches to ROW when seeing binrow

mysql-test/t/rpl_row_basic_8partition.test

@@ -8,12 +8,17 @@
 ############################################################
 
 --source include/have_row_based.inc
+--source include/have_binlog_format_row.inc
 --source include/have_partition.inc
+--source include/not_ndb_default.inc
 --source include/master-slave.inc
 connection master;
 --disable_warnings
 DROP TABLE IF EXISTS t1;
-SET BINLOG_FORMAT=ROW;
+
+let $maybe_ro_var = @@BINLOG_FORMAT;
+let $val4var = ROW;
+--source include/safe_set_to_maybe_ro_var.inc
 
 --echo **** Partition RANGE testing ****
 

mysql-test/t/rpl_switch_stm_row_mixed.test

 -- source include/have_row_based.inc
+-- source include/not_ndb_default.inc
 -- source include/master-slave.inc
 
 connection master;

mysql-test/t/rpl_truncate_2myisam.test

-
+--source include/not_ndb_default.inc
 let $engine=MyISAM;
 --source extra/rpl_tests/rpl_truncate.test
 

mysql-test/t/rpl_truncate_3innodb.test

 
 --source include/have_innodb.inc
+--source include/not_ndb_default.inc
 
 let $engine=InnoDB;
 --source extra/rpl_tests/rpl_truncate.test